Lapping device



Oct. 25, 1949. c. M. CROFT ETAL LAPPING DEVICE Filed May 23. 1946 INVENTORS.

CVRI l M CROFT E m E em R I s Wm M a wn AF N i A Patented Oct. 25, 1949 LAPPING DEVICE Cyril M. Croft, Alvin W. Bergeron, and Frederick G. Dodge, Cumberland, Md., assignors to Gelanese Corporation Delaware of America, a corporation of Application May 23, 1946, Serial No. 671,762

3 Claims. (Cl. 271-24) This invention relates to a textile winding apparatus and relates more particularly to means for winding or batching fabrics on to a take-up roll or shell.

During the processing of fabrics as in dyeing, printing, finishing or the like, the fabrics are normally taken up or wound on rolls or shells. Where no means are provided to avoid it, the fabrics are so wound that the selvedges of the fabric are in register and, therefore, tend to pile up to form banks at the ends of the roll of fabric. The piling up of the selvedges not only causes a certain amount of undesirable stretching in the selvedges but also makes them liable to turn or fall over with the result that the fabric may be excessively creased.

It is, therefore, an important object of this in vention to provide improved fabric batching means for feeding a fabric from an idler guide roll to a driven fabric take-up roll or shell whereby the fabric will be shifted from side to side by the guide roll during the operation causing the selvedges to be staggered out of register on the take-up roll or shell.

Another object of this invention is the provision of adjusting means whereby the extent of the side-to-side throw of the selvedges by the shifting idler guide roll may be increased or decreased, as desired.

Other obiects of this invention will appear from the f allowing detailed description and the accompanf'ing drawing.

In the d 'awing, the figure is a perspective view of a guide roll and a fabric passing over said guide roll showing the means employed for shifting said guide roll from side to side as the fabric is guided to a take-up roll.

Referring now to the drawing, there is shown a fabric I passing over a guide roll 2 mounted on a shaft 3 which rotates in bearings 4, only one of which is shown. Bearings 4 are attached to a block 5 which is attached to channel-iron support 6 by means of bolts 1. Support 6 is mounted on the upper portion 8 of a pivot assembly generally indicated by reference numeral 9 by means of screws ID. The lower portion ll of pivot assembly 8 is set in a second channel-iron support [2. Between the upper portion 8 and the lower portion ll of said pivot assembly 9 there is provided a suitable ball thrust bearing l3, and a radial ball bearing I4, the bearings being so situated as to allow free pivotal movement between supports 6 and I2. The pivot assembly is held together by a nut l5 threaded on to a shank l6 -integral with the upper portion 8 of pivot assembly 9. Support I2 is suitably supported by the machine frame (not shown).

Shaft 3 carries a worm l1 keyed thereto which meshes with a worm gear I8, keyed to a shaft I 9, rotatably mounted in a bracket which also serves as an auxiliary bearing for shaft 3. Fixed to shaft l9, as by a pin 2|, is the upper arm 22 of a U-shaped connecting link 23. The other arm 24 of link 23 is provided with a slot 25 through which is adapted to pass the threaded end 26 of a shaft 21 rotatably mounted in a bearing 28 which is part of the upper arm 29 of a hinge linkage generally indicated by reference numeral 30. The lower arm 3| of said linkage is welded at 32' to support I2. Upper arm 29 of hinge linkage 30 is pivotally mounted in the fixed lower arm 3| by means of a pin 32 pressfitted into said upper arm and projecting into a suitable recess or bearing 33 provided in lower arm 3|. The position in the slot 25 of threaded end 26 of shaft 21 may be adjusted and held in adjusted position by means of a locknut 34.

The staggering of the fabric selvedge is effected automatically by our novel device during the normal rotation of guide roll 2 as fabric I passes over said guide roll on the way to the take-up roll (not shown). The rotation of guide roll 2 rotates shaft 3 and worm l1 keyed thereto, which causes worm gear [8 and shaft l9 on which it is mounted to rotate also. Shaft I9 is pinned to link 23 and the rotation of shaft l9 rotates the latter. When shaft 21 is so adjusted in slot 25 that it is in line with rotating shaft I9, link 23 merely rotates and no throw of guide roll 2 about pivot 8 is produced. When, however, the axis of shaft 27 is out of line with the axis of shaft IS, the rotation of link 23 caused by the rotation of guide roll 2 produces an eccentric motion which causes guide roll 2 to oscillate back and forth on pivot 9 while remaining in the same plane. This oscillating movement of guide roll 2 gives a side-to-side movement to fabric l passing over the guide roll 2 and, therefore, staggers the selvedges as the fabric is batched on the take-up roll so that stretched or turned selvedges are avoided. The extent of the oscillating movement of guide roll 2 is determined by the position at which shaft 21 is fixed in slot 25 by locknut 34.

It is to be understood that the foregoing detailed description is given merely by way of illustration and that many variations may be made therein without departing from the spirit of our invention.

Having described our invention, what we desire to secure by Letters Patent is:

1. In a device for winding fabrics on to a driven take-up roll, means for shifting the fabric laterally during the winding thereof comprising a guide roll movable by the moving fabric, a shaft for said guide roll. bearings for journaling said shaft, a support for said bearings, a pivot intermediate said bearinss on which said support is mounted, and means actuated by the rotation of said guide roll for rocking said support and guide roll in a horizontal plane, said latter means including a worm fixed to and rotatable with said shaft, a worm gear meshing with said worm and an eccentric link operably connected to said worm gear.

2. In a, device for winding fabrics on to a driven take-up roll, means for shifting the fabric laterally during the winding thereof comprising a guide roll movable by the moving fabric, a shaft for said guide roll, bearings for Journaling said shaft, a support for said bearings, a pivot on which said support is mounted, and means actuated by the rotation of said guide roll for rocking said support and guide roll in a horizontal plane, said latter means including a worm fixed to and rotatable with said shaft, a worm gear meshing with said worm, a shaft supporting said worm gear and-rotatable therewith, a rotatably mounted U-shape link having one arm attached to said 30 latter shaft and means adiustably connected to the other arm of said link for producing a crank motion on rotation of said guide roll.

3. In a device for winding fabrics on to a driven take-up roll, means for shifting the fabric laterally during the winding thereof comprising a guide roll movable by the moving fabric, a shaft for said guide roll, bearings for iournalingsaid shaft, 2. support for said bearings, a pivot on which said support is mounted, a relatively fixed support for said pivot, and means actuated by the rotation of said guide roll for rocking said support and guide roll ina horizontal plane, said rotation of said guide roll by the moving fabric, a crank motion is produced.

CYRIL M. CROFT. ALVIN W. BERGERON. FREDERICK G. DODGE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name 1"? 1,958,692 Besal et a1. May 15, 1934 2,037,086 Nash Apr. 14, 1936 2,220,613 Parkes et a1. Nov. 5, 1940 2,353,653 Croft et a1. July 18, 194% 

